Anti-falling lifting device of gantry crane
By using shared wire ropes and anti-fall components in the gantry crane to ensure that the trolleys run at the same frequency, the problems of deflection and falling of prefabricated beams during the lifting process are solved, and safe and stable lifting and convenient maintenance are achieved.
Patent Information
- Application Number
- CN202422248616.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-09-13
AI Technical Summary
The two trolleys of the existing gantry crane are raised and lowered separately, which cannot ensure that the speed of each motor is the same, resulting in the center of gravity of the precast beam shifting, causing it to deflect and possibly fall off during the lifting process.
The design of sharing a steel wire rope enables the two trolleys to run at the same frequency, and the anti-fall component and the locking component ensure the stability of the center of gravity of the beam when lifting the cargo. The coordinated use of the rotating plate, rotating rod, torsion spring, telescopic rod and spring realizes synchronous lifting and limiting.
It effectively avoids the shift of the beam's center of gravity and the falling of goods caused by the trolley's asynchrony, improves the safety and stability of lifting, and facilitates the disassembly and replacement of the hook and rotating rod, avoiding the impact of long-term failures on work efficiency.
Smart Images
Figure CN223422207U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cranes, in particular to an anti-fall-off lifting device for a gantry crane. Background Art
[0002] The design and function of the gantry crane's anti-slip lifting device can effectively ensure the safety of the gantry crane during operation, reduce the occurrence of accidents, and protect the safety of personnel and equipment.
[0003] The existing lifting mechanisms all use two trolleys to lift and hoist the goods, but the two trolleys are lifted and lowered at independent points. Since it is impossible to ensure that the speed of each motor is the same, and the center of gravity of the prefabricated beam itself is offset, the prefabricated beam is deflected during the lifting process, resulting in it falling off. Therefore, an anti-falling lifting device for a gantry crane is proposed to solve the above problem. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings in the prior art that the two trolleys are lifted and lowered at independent points, the rotational speed of each motor cannot be guaranteed to be the same, and the center of gravity of the prefabricated beam itself is offset, causing the prefabricated beam to deflect during the lifting process, resulting in falling off. An anti-falling lifting device for a gantry crane is proposed.
[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an anti-slip lifting device for a gantry crane, comprising a crossbeam, the left and right sides of the bottom of the crossbeam are fixedly connected to a winch, two trolleys are provided on the corresponding side of the winch, the trolley is slidably connected to the inside of the crossbeam, a guide pulley group is provided on the corresponding side of the trolley, the bottom of the trolley is connected to a movable pulley group through a steel wire rope, a fixed rod is provided inside the bottom side of the movable pulley group, the bottom end of the fixed rod is fixedly connected to a hook, a rotating groove is provided on one side of the inner side of the hook, an anti-slip assembly is provided inside the rotating groove, and a buckle plate is fixedly connected to the corresponding side of the fixed rod, and a locking assembly is fixedly connected to the inner bottom side of the buckle plate.
[0006] As a further description of the above technical solution:
[0007] The anti-falling assembly includes a rotating plate, which is rotatably connected to the inside of the rotating groove. The outside of the rotating plate is rotatably connected to a rotating rod. The inner bottom sides of the rotating plate and the rotating rod are both rotatably connected to a connecting rod, and the outside of the connecting rod is sleeved with a torsion spring.
[0008] As a further description of the above technical solution:
[0009] The inner bottom side of the movable pulley group is fixedly connected to a mounting plate, and the fixed rod is slidably connected to the inside of the mounting plate. The inner parts of the movable pulley group and the fixed rod are threadedly connected with bolts, and the outer side of the bolt is threadedly connected with a nut. The front and rear ends of the connecting rod are fixedly connected with threaded heads, and the outer side of the threaded head is threadedly connected with a nut.
[0010] As a further description of the above technical solution:
[0011] The clamping assembly includes a telescopic rod, which is fixedly connected to the inner bottom side of the gusset plate. One end of the telescopic rod is fixedly connected to the movable clamping plate, and the outside of the telescopic rod is sleeved with a spring.
[0012] As a further description of the above technical solution:
[0013] One end of the spring is fixedly connected to the bottom of the movable clamping plate, and the other end of the spring is fixedly connected to the inner bottom side of the buckle plate.
[0014] As a further description of the above technical solution:
[0015] Both ends of the torsion spring are fixedly connected to the inside of the rotating plate.
[0016] As a further description of the above technical solution:
[0017] The left and right sides of the bottom of the crossbeam are both fixedly connected with support frames, and the bottom of the support frame is fixedly connected with a base.
[0018] As a further description of the above technical solution:
[0019] Rollers are fixedly connected to the front and rear sides of the bottom of the base.
[0020] The utility model has the following beneficial effects:
[0021] 1. In the utility model, two winches share a wire rope, which is wound around a fixed pulley group, a movable pulley group and a guide pulley group provided in the trolley, so that the two trolleys run at the same frequency. When the cargo is lifted and hooked by the hook, the rotating plate is pressed down, so that the rotating plate and the rotating rod are rotated and the torsion spring is twisted. The buckle plate is buckled to press down the mobile card, so that the telescopic rod and the spring are squeezed, and the rotating rod is rotated and clamped into the inside of the mobile card, so that the situation of the center of gravity of the beam shifting and falling off due to the different frequencies of the trolleys is avoided when lifting the cargo, and the cargo is fixed and limited at the same time to avoid slipping out of the hook.
[0022] 2. In the present invention, the rotating rod can be disassembled and replaced by separating the nut from the threaded head, separating the nut from the bolt, and rotating the bolt to unscrew it out of the interior of the fixed rod, and pulling the hook to move the fixed rod out of the mounting plate, thereby realizing the disassembly and replacement of the hook and the rotating rod, avoiding malfunction caused by long-term use without timely replacement, which affects work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a three-dimensional diagram of an anti-drop lifting device for a gantry crane proposed in the utility model;
[0024] Figure 2 A three-dimensional diagram of a hook of an anti-drop lifting device for a gantry crane proposed in the present invention;
[0025] Figure 3 This is a partial structural diagram of an anti-drop lifting device for a gantry crane proposed in the utility model;
[0026] Figure 4 for Figure 2 Enlarged view of point A.
[0027] Legend:
[0028] 1. Base; 2. Roller; 3. Support frame; 4. Beam; 5. Winch; 6. Movable pulley block; 7. Rotating plate; 8. Rotating rod; 9. Hook; 10. Bolt; 11. Fixed rod; 12. Nut; 13. Mounting plate; 14. Rotating groove; 15. Threaded head; 16. Nut; 17. Connecting rod; 18. Torsion spring; 19. Buckle plate; 20. Moving card plate; 21. Telescopic rod; 22. Spring; 23. Trolley; 24. Guide pulley block. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0030] Reference Figure 1 、 Figure 3 、 Figure 4The utility model provides an embodiment of an anti-slip lifting device for a gantry crane, comprising a cross beam 4, with winches 5 fixedly connected to the left and right sides of the bottom of the cross beam 4, two trolleys 23 are provided on the corresponding side of the winch 5, the trolley 23 is slidably connected to the inside of the cross beam 4, a guide pulley group 24 is provided on the corresponding side of the trolley 23, the bottom of the trolley 23 is connected to a movable pulley group 6 through a wire rope, a fixed rod 11 is provided inside the bottom side of the movable pulley group 6, the bottom end of the fixed rod 11 is fixedly connected to a hook 9, a rotating groove 14 is provided on one side of the interior of the hook 9, an anti-slip assembly is provided inside the rotating groove 14, and a pinch plate 19 is fixedly connected to the corresponding side of the fixed rod 11, and a clamping assembly is fixedly connected to the inner bottom side of the pinch plate 19;
[0031] The anti-falling assembly includes a rotating plate 7, which is rotatably connected to the inside of the rotating groove 14, and the outside of the rotating plate 7 is rotatably connected to the rotating rod 8. The inner bottom sides of the rotating plate 7 and the rotating rod 8 are both rotatably connected to the connecting rod 17, and the outside of the connecting rod 17 is sleeved with a torsion spring 18. The locking assembly includes a telescopic rod 21, which is fixedly connected to the inner bottom side of the buckle plate 19, and one end of the telescopic rod 21 is fixedly connected to the movable card plate 20, and the outside of the telescopic rod 21 is sleeved with a spring 22.
[0032] The two winches 5 share a wire rope, which is wound back and forth many times between the fixed pulley group, the movable pulley group 6 and the guide pulley group 24 provided in the trolley 23 to form a single lifting point structure, so that the two trolleys 23 run at the same frequency, and while the cargo is hoisted and hooked by the hook 9, the binding rope provided on the cargo presses down the rotating plate 7, causing the rotating plate 7 to rotate and twisting the torsion spring 18 to generate a rebound force, so that it drives the rotating rod 8 to rotate, buckles the buckle plate 19, and presses down the mobile card plate 20, so that the telescopic rod 21 and the elastic The spring 22 is squeezed, and the rotating rod 8 is rotated and stuck in the inside of the mobile card plate 20. When the goods fall to the ground, the rotating plate 7 loses pressure, and the rotational force of the torsion spring 18 drives the rotating plate 7 and the rotating rod 8 to rotate, so that the rotating rod 8 moves out of the inside of the mobile card plate 20 and the buckle plate 19. This prevents the center of gravity of the crossbeam 4 from shifting and falling off due to the different frequencies of the trolley 23 when lifting the goods, and fixes the limit while lifting the goods to prevent them from sliding out of the hook 9 and automatically returning to their original position. There is no need for personnel to manually separate the rotating rod 8 from the buckle plate 19.
[0033] Reference Figure 1 、 Figure 2 、 Figure 3 The bottom side of the inner part of the movable pulley group 6 is fixedly connected to the mounting plate 13, and the fixed rod 11 is slidably connected to the inside of the mounting plate 13. The inner parts of the movable pulley group 6 and the fixed rod 11 are threadedly connected with bolts 10, and the outer side of the bolt 10 is threadedly connected with a nut 12. The front and rear ends of the connecting rod 17 are fixedly connected with threaded heads 15, and the outer side of the threaded head 15 is threadedly connected with a nut 16.
[0034] By rotating the nut 16 to separate it from the threaded head 15, rotating the threaded head 15, pushing the threaded head 15 to one side to separate one side of the rotating rod 8 from the connecting rod 17, and pushing the threaded head 15 on the other side to perform the same operation, the rotating rod 8 is disassembled and replaced, the nut 12 is rotated to separate it from the bolt 10, and the bolt 10 is rotated to screw it out of the interior of the fixing rod 11, and the hook 9 is pulled downward to move the fixing rod 11 out of the interior of the mounting plate 13, thereby disassembling and replacing the hook 9 and the rotating rod 8, avoiding malfunction caused by long-term use without timely replacement, which affects work efficiency.
[0035] Reference Figure 1 、 Figure 3 、 Figure 4 One end of the spring 22 is fixedly connected to the bottom of the movable card plate 20, and the other end of the spring 22 is fixedly connected to the inner bottom side of the buckle plate 19; both ends of the torsion spring 18 are fixedly connected to the inside of the rotating plate 7; the left and right sides of the bottom of the beam 4 are fixedly connected to the support frame 3, the bottom of the support frame 3 is fixedly connected to the base 1, and the front and rear sides of the bottom of the base 1 are fixedly connected to the roller 2.
[0036] The two ends of the spring 22 are fixed to one side of the movable card plate 20 and the buckle plate 19, so that the spring 22 can generate a rebound force when it is squeezed by the movable card plate 20; the torsion spring 18 is fixed inside the rotating plate 7, so that the rotating plate 7 is rotated, and the torsion spring 18 can be twisted to generate a rotational force; through the mutual cooperation between the support frame 3, the base 1 and the roller 2, the entire device is fixedly supported and moved.
[0037] Working principle: When the device needs to be used, two winches 5 share a wire rope, which is wound between the fixed pulley group, the movable pulley group 6 and the guide pulley group 24 provided in the trolley 23, so that the two trolleys 23 run at the same frequency, and while the cargo is hoisted and hooked through the hook 9, the rotating plate 7 is pressed down, so that the rotating plate 7 rotates and the torsion spring 18 is twisted to generate a rebound force, so that it drives the rotating rod 8 to rotate, buckles the buckle plate 19, and presses down the mobile card plate 20, so that the telescopic rod 21 and the spring 22 are squeezed, and the rotating rod 8 rotates and is stuck to the inside of the mobile card plate 20, so that the situation of the center of gravity of the beam 4 shifting and falling off due to the different frequencies of the trolleys 23 is avoided when hoisting the cargo, and the cargo is fixed and limited at the same time to avoid slipping out of the hook 9;
[0038] By rotating the nut 16 to separate it from the threaded head 15 and rotating the threaded head 15, the rotating rod 8 can be disassembled and replaced, the nut 12 is rotated to separate it from the bolt 10, and the bolt 10 is rotated to screw it out of the interior of the fixing rod 11, and the hook 9 is pulled downward to move the fixing rod 11 out of the interior of the mounting plate 13, thereby realizing the disassembly and replacement of the hook 9 and the rotating rod 8, avoiding malfunction caused by long-term use without timely replacement, which affects work efficiency.
[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An anti-drop lifting device for a gantry crane, comprising a crossbeam (4), characterized in that: The left and right sides of the bottom of the crossbeam (4) are fixedly connected to winches (5), and two trolleys (23) are provided on the corresponding side of the winch (5). The trolleys (23) are slidably connected to the inside of the crossbeam (4), and a guide pulley group (24) is provided on the corresponding side of the trolley (23). The bottom of the trolley (23) is connected to a movable pulley group (6) through a wire rope. A fixed rod (11) is provided inside the bottom side of the movable pulley group (6), and a hook (9) is fixedly connected to the bottom end of the fixed rod (11). A rotating groove (14) is provided on one side of the inside of the hook (9), and an anti-falling component is provided inside the rotating groove (14). A buckle plate (19) is fixedly connected to the corresponding side of the fixed rod (11), and a locking component is fixedly connected to the bottom side of the inner part of the buckle plate (19).
2. The anti-drop lifting device for a gantry crane according to claim 1, characterized in that: The anti-falling assembly comprises a rotating plate (7), the rotating plate (7) is rotatably connected to the inside of the rotating groove (14), the outside of the rotating plate (7) is rotatably connected to a rotating rod (8), the inner bottom sides of the rotating plate (7) and the rotating rod (8) are both rotatably connected to a connecting rod (17), and the outside of the connecting rod (17) is sleeved with a torsion spring (18).
3. The anti-drop lifting device for a gantry crane according to claim 2, characterized in that: The bottom side of the movable pulley block (6) is fixedly connected to a mounting plate (13), the fixing rod (11) is slidably connected to the inside of the mounting plate (13), the insides of the movable pulley block (6) and the fixing rod (11) are both threadedly connected to bolts (10), the outer side of the bolt (10) is threadedly connected to a nut (12), the front and rear ends of the connecting rod (17) are both fixedly connected to threaded heads (15), and the outer side of the threaded head (15) is threadedly connected to a nut (16).
4. The anti-drop lifting device for a gantry crane according to claim 1, characterized in that: The clamping assembly comprises a telescopic rod (21), the telescopic rod (21) being fixedly connected to the inner bottom side of the gusset plate (19), one end of the telescopic rod (21) being fixedly connected to the movable clamping plate (20), and the outside of the telescopic rod (21) being sleeved with a spring (22).
5. The anti-drop lifting device for a gantry crane according to claim 4, characterized in that: One end of the spring (22) is fixedly connected to the bottom of the movable card plate (20), and the other end of the spring (22) is fixedly connected to the inner bottom side of the buckle plate (19).
6. The anti-drop lifting device for a gantry crane according to claim 2, characterized in that: Both ends of the torsion spring (18) are fixedly connected to the inside of the rotating plate (7).
7. The anti-drop lifting device for a gantry crane according to claim 1, characterized in that: The left and right sides of the bottom of the crossbeam (4) are both fixedly connected to support frames (3), and the bottom of the support frame (3) is fixedly connected to a base (1).
8. The anti-drop lifting device for a gantry crane according to claim 7, characterized in that: Rollers (2) are fixedly connected to the front and rear sides of the bottom of the base (1).